<%@ page contentType="text/html; charset=UTF-8" %>
<html>
<head>
    <script>
        function myFunction() {
            alert("Hello World!");
        }
    </script>
    <title>Hello World</title>
</head>
<body>
<h2>Our message is: ${message}</h2>
<button onclick="myFunction()">Try it</button>
</body>
</html>
